--
-- CREATE_INDEX
-- Create ancillary data structures (i.e. indices)
--
--
-- BTREE
--
CREATE INDEX onek_unique1 ON onek USING btree (unique1 int4_ops);

CREATE INDEX IF NOT EXISTS onek_unique1 ON onek USING btree (unique1 int4_ops);

CREATE INDEX IF NOT EXISTS ON onek USING btree (unique1 int4_ops);

CREATE INDEX onek_unique2 ON onek USING btree (unique2 int4_ops);

CREATE INDEX onek_hundred ON onek USING btree (hundred int4_ops);

CREATE INDEX onek_stringu1 ON onek USING btree (stringu1 name_ops);

CREATE INDEX tenk1_unique1 ON tenk1 USING btree (unique1 int4_ops);

CREATE INDEX tenk1_unique2 ON tenk1 USING btree (unique2 int4_ops);

CREATE INDEX tenk1_hundred ON tenk1 USING btree (hundred int4_ops);

CREATE INDEX tenk1_thous_tenthous ON tenk1 (thousand, tenthous);

CREATE INDEX tenk2_unique1 ON tenk2 USING btree (unique1 int4_ops);

CREATE INDEX tenk2_unique2 ON tenk2 USING btree (unique2 int4_ops);

CREATE INDEX tenk2_hundred ON tenk2 USING btree (hundred int4_ops);

CREATE INDEX rix ON road USING btree (name text_ops);

CREATE INDEX iix ON ihighway USING btree (name text_ops);

CREATE INDEX six ON shighway USING btree (name text_ops);

-- test comments
COMMENT ON INDEX six_wrong IS 'bad index';

COMMENT ON INDEX six IS 'good index';

COMMENT ON INDEX six IS NULL;

--
-- BTREE ascending/descending cases
--
-- we load int4/text from pure descending data (each key is a new
-- low key) and name/f8 from pure ascending data (each key is a new
-- high key).  we had a bug where new low keys would sometimes be
-- "lost".
--
CREATE INDEX bt_i4_index ON bt_i4_heap USING btree (seqno int4_ops);

CREATE INDEX bt_name_index ON bt_name_heap USING btree (seqno name_ops);

CREATE INDEX bt_txt_index ON bt_txt_heap USING btree (seqno text_ops);

CREATE INDEX bt_f8_index ON bt_f8_heap USING btree (seqno float8_ops);

--
-- BTREE partial indices
--
CREATE INDEX onek2_u1_prtl ON onek2 USING btree (unique1 int4_ops)
WHERE
    unique1 < 20 OR unique1 > 980;

CREATE INDEX onek2_u2_prtl ON onek2 USING btree (unique2 int4_ops)
WHERE
    stringu1 < 'B';

CREATE INDEX onek2_stu1_prtl ON onek2 USING btree (stringu1 name_ops)
WHERE
    onek2.stringu1 >= 'J' AND onek2.stringu1 < 'K';

--
-- GiST (rtree-equivalent opclasses only)
--
CREATE INDEX grect2ind ON fast_emp4000 USING gist (home_base);

CREATE INDEX gpolygonind ON polygon_tbl USING gist (f1);

CREATE INDEX gcircleind ON circle_tbl USING gist (f1);

INSERT INTO POINT_TBL (f1)
    VALUES (NULL);

CREATE INDEX gpointind ON point_tbl USING gist (f1);

CREATE TEMP TABLE gpolygon_tbl AS
SELECT
    polygon(home_base) AS f1
FROM
    slow_emp4000;

INSERT INTO gpolygon_tbl
    VALUES ('(1000,0,0,1000)');

INSERT INTO gpolygon_tbl
    VALUES ('(0,1000,1000,1000)');

CREATE TEMP TABLE gcircle_tbl AS
SELECT
    circle(home_base) AS f1
FROM
    slow_emp4000;

CREATE INDEX ggpolygonind ON gpolygon_tbl USING gist (f1);

CREATE INDEX ggcircleind ON gcircle_tbl USING gist (f1);

--
-- Test GiST indexes
--
-- get non-indexed results for comparison purposes
SET enable_seqscan = ON;

SET enable_indexscan = OFF;

SET enable_bitmapscan = OFF;

SELECT
    *
FROM
    fast_emp4000
WHERE
    home_base @ '(200,200),(2000,1000)'::box
ORDER BY
    (home_base[0])[0];

SELECT
    count(*)
FROM
    fast_emp4000
WHERE
    home_base && '(1000,1000,0,0)'::box;

SELECT
    count(*)
FROM
    fast_emp4000
WHERE
    home_base IS NULL;

SELECT
    *
FROM
    polygon_tbl
WHERE
    f1 ~ '((1,1),(2,2),(2,1))'::polygon
ORDER BY
    (poly_center(f1))[0];

SELECT
    *
FROM
    circle_tbl
WHERE
    f1 && circle(point(1, -2), 1)
ORDER BY
    area(f1);

SELECT
    count(*)
FROM
    gpolygon_tbl
WHERE
    f1 && '(1000,1000,0,0)'::polygon;

SELECT
    count(*)
FROM
    gcircle_tbl
WHERE
    f1 && '<(500,500),500>'::circle;

SELECT
    count(*)
FROM
    point_tbl
WHERE
    f1 <@ box '(0,0,100,100)';

SELECT
    count(*)
FROM
    point_tbl
WHERE
    box '(0,0,100,100)' @> f1;

SELECT
    count(*)
FROM
    point_tbl
WHERE
    f1 <@ polygon '(0,0),(0,100),(100,100),(50,50),(100,0),(0,0)';

SELECT
    count(*)
FROM
    point_tbl
WHERE
    f1 <@ circle '<(50,50),50>';

SELECT
    count(*)
FROM
    point_tbl p
WHERE
    p.f1 << '(0.0, 0.0)';

SELECT
    count(*)
FROM
    point_tbl p
WHERE
    p.f1 >> '(0.0, 0.0)';

SELECT
    count(*)
FROM
    point_tbl p
WHERE
    p.f1 <^ '(0.0, 0.0)';

SELECT
    count(*)
FROM
    point_tbl p
WHERE
    p.f1 >^ '(0.0, 0.0)';

SELECT
    count(*)
FROM
    point_tbl p
WHERE
    p.f1 ~= '(-5, -12)';

SELECT
    *
FROM
    point_tbl
ORDER BY
    f1 <-> '0,1';

SELECT
    *
FROM
    point_tbl
WHERE
    f1 IS NULL;

SELECT
    *
FROM
    point_tbl
WHERE
    f1 IS NOT NULL
ORDER BY
    f1 <-> '0,1';

SELECT
    *
FROM
    point_tbl
WHERE
    f1 <@ '(-10,-10),(10,10)'::box
ORDER BY
    f1 <-> '0,1';

SELECT
    *
FROM
    gpolygon_tbl
ORDER BY
    f1 <-> '(0,0)'::point
LIMIT 10;

SELECT
    circle_center(f1),
    round(radius(f1)) AS radius
FROM
    gcircle_tbl
ORDER BY
    f1 <-> '(200,300)'::point
LIMIT 10;

-- Now check the results from plain indexscan
SET enable_seqscan = OFF;

SET enable_indexscan = ON;

SET enable_bitmapscan = OFF;

EXPLAIN (
    COSTS OFF
)
SELECT
    *
FROM
    fast_emp4000
WHERE
    home_base @ '(200,200),(2000,1000)'::box
ORDER BY
    (home_base[0])[0];

SELECT
    *
FROM
    fast_emp4000
WHERE
    home_base @ '(200,200),(2000,1000)'::box
ORDER BY
    (home_base[0])[0];

EXPLAIN (
    COSTS OFF
)
SELECT
    count(*)
FROM
    fast_emp4000
WHERE
    home_base && '(1000,1000,0,0)'::box;

SELECT
    count(*)
FROM
    fast_emp4000
WHERE
    home_base && '(1000,1000,0,0)'::box;

EXPLAIN (
    COSTS OFF
)
SELECT
    count(*)
FROM
    fast_emp4000
WHERE
    home_base IS NULL;

SELECT
    count(*)
FROM
    fast_emp4000
WHERE
    home_base IS NULL;

EXPLAIN (
    COSTS OFF
)
SELECT
    *
FROM
    polygon_tbl
WHERE
    f1 ~ '((1,1),(2,2),(2,1))'::polygon
ORDER BY
    (poly_center(f1))[0];

SELECT
    *
FROM
    polygon_tbl
WHERE
    f1 ~ '((1,1),(2,2),(2,1))'::polygon
ORDER BY
    (poly_center(f1))[0];

EXPLAIN (
    COSTS OFF
)
SELECT
    *
FROM
    circle_tbl
WHERE
    f1 && circle(point(1, -2), 1)
ORDER BY
    area(f1);

SELECT
    *
FROM
    circle_tbl
WHERE
    f1 && circle(point(1, -2), 1)
ORDER BY
    area(f1);

EXPLAIN (
    COSTS OFF
)
SELECT
    count(*)
FROM
    gpolygon_tbl
WHERE
    f1 && '(1000,1000,0,0)'::polygon;

SELECT
    count(*)
FROM
    gpolygon_tbl
WHERE
    f1 && '(1000,1000,0,0)'::polygon;

EXPLAIN (
    COSTS OFF
)
SELECT
    count(*)
FROM
    gcircle_tbl
WHERE
    f1 && '<(500,500),500>'::circle;

SELECT
    count(*)
FROM
    gcircle_tbl
WHERE
    f1 && '<(500,500),500>'::circle;

EXPLAIN (
    COSTS OFF
)
SELECT
    count(*)
FROM
    point_tbl
WHERE
    f1 <@ box '(0,0,100,100)';

SELECT
    count(*)
FROM
    point_tbl
WHERE
    f1 <@ box '(0,0,100,100)';

EXPLAIN (
    COSTS OFF
)
SELECT
    count(*)
FROM
    point_tbl
WHERE
    box '(0,0,100,100)' @> f1;

SELECT
    count(*)
FROM
    point_tbl
WHERE
    box '(0,0,100,100)' @> f1;

EXPLAIN (
    COSTS OFF
)
SELECT
    count(*)
FROM
    point_tbl
WHERE
    f1 <@ polygon '(0,0),(0,100),(100,100),(50,50),(100,0),(0,0)';

SELECT
    count(*)
FROM
    point_tbl
WHERE
    f1 <@ polygon '(0,0),(0,100),(100,100),(50,50),(100,0),(0,0)';

EXPLAIN (
    COSTS OFF
)
SELECT
    count(*)
FROM
    point_tbl
WHERE
    f1 <@ circle '<(50,50),50>';

SELECT
    count(*)
FROM
    point_tbl
WHERE
    f1 <@ circle '<(50,50),50>';

EXPLAIN (
    COSTS OFF
)
SELECT
    count(*)
FROM
    point_tbl p
WHERE
    p.f1 << '(0.0, 0.0)';

SELECT
    count(*)
FROM
    point_tbl p
WHERE
    p.f1 << '(0.0, 0.0)';

EXPLAIN (
    COSTS OFF
)
SELECT
    count(*)
FROM
    point_tbl p
WHERE
    p.f1 >> '(0.0, 0.0)';

SELECT
    count(*)
FROM
    point_tbl p
WHERE
    p.f1 >> '(0.0, 0.0)';

EXPLAIN (
    COSTS OFF
)
SELECT
    count(*)
FROM
    point_tbl p
WHERE
    p.f1 <^ '(0.0, 0.0)';

SELECT
    count(*)
FROM
    point_tbl p
WHERE
    p.f1 <^ '(0.0, 0.0)';

EXPLAIN (
    COSTS OFF
)
SELECT
    count(*)
FROM
    point_tbl p
WHERE
    p.f1 >^ '(0.0, 0.0)';

SELECT
    count(*)
FROM
    point_tbl p
WHERE
    p.f1 >^ '(0.0, 0.0)';

EXPLAIN (
    COSTS OFF
)
SELECT
    count(*)
FROM
    point_tbl p
WHERE
    p.f1 ~= '(-5, -12)';

SELECT
    count(*)
FROM
    point_tbl p
WHERE
    p.f1 ~= '(-5, -12)';

EXPLAIN (
    COSTS OFF
)
SELECT
    *
FROM
    point_tbl
ORDER BY
    f1 <-> '0,1';

SELECT
    *
FROM
    point_tbl
ORDER BY
    f1 <-> '0,1';

EXPLAIN (
    COSTS OFF
)
SELECT
    *
FROM
    point_tbl
WHERE
    f1 IS NULL;

SELECT
    *
FROM
    point_tbl
WHERE
    f1 IS NULL;

EXPLAIN (
    COSTS OFF
)
SELECT
    *
FROM
    point_tbl
WHERE
    f1 IS NOT NULL
ORDER BY
    f1 <-> '0,1';

SELECT
    *
FROM
    point_tbl
WHERE
    f1 IS NOT NULL
ORDER BY
    f1 <-> '0,1';

EXPLAIN (
    COSTS OFF
)
SELECT
    *
FROM
    point_tbl
WHERE
    f1 <@ '(-10,-10),(10,10)'::box
ORDER BY
    f1 <-> '0,1';

SELECT
    *
FROM
    point_tbl
WHERE
    f1 <@ '(-10,-10),(10,10)'::box
ORDER BY
    f1 <-> '0,1';

EXPLAIN (
    COSTS OFF
)
SELECT
    *
FROM
    gpolygon_tbl
ORDER BY
    f1 <-> '(0,0)'::point
LIMIT 10;

SELECT
    *
FROM
    gpolygon_tbl
ORDER BY
    f1 <-> '(0,0)'::point
LIMIT 10;

EXPLAIN (
    COSTS OFF
)
SELECT
    circle_center(f1),
    round(radius(f1)) AS radius
FROM
    gcircle_tbl
ORDER BY
    f1 <-> '(200,300)'::point
LIMIT 10;

SELECT
    circle_center(f1),
    round(radius(f1)) AS radius
FROM
    gcircle_tbl
ORDER BY
    f1 <-> '(200,300)'::point
LIMIT 10;

-- Now check the results from bitmap indexscan
SET enable_seqscan = OFF;

SET enable_indexscan = OFF;

SET enable_bitmapscan = ON;

EXPLAIN (
    COSTS OFF
)
SELECT
    *
FROM
    point_tbl
WHERE
    f1 <@ '(-10,-10),(10,10)'::box
ORDER BY
    f1 <-> '0,1';

SELECT
    *
FROM
    point_tbl
WHERE
    f1 <@ '(-10,-10),(10,10)'::box
ORDER BY
    f1 <-> '0,1';

RESET enable_seqscan;

RESET enable_indexscan;

RESET enable_bitmapscan;

--
-- GIN over int[] and text[]
--
-- Note: GIN currently supports only bitmap scans, not plain indexscans
--
SET enable_seqscan = OFF;

SET enable_indexscan = OFF;

SET enable_bitmapscan = ON;

CREATE INDEX intarrayidx ON array_index_op_test USING gin (i);

EXPLAIN (
    COSTS OFF
)
SELECT
    *
FROM
    array_index_op_test
WHERE
    i @> '{32}'
ORDER BY
    seqno;

SELECT
    *
FROM
    array_index_op_test
WHERE
    i @> '{32}'
ORDER BY
    seqno;

SELECT
    *
FROM
    array_index_op_test
WHERE
    i && '{32}'
ORDER BY
    seqno;

SELECT
    *
FROM
    array_index_op_test
WHERE
    i @> '{17}'
ORDER BY
    seqno;

SELECT
    *
FROM
    array_index_op_test
WHERE
    i && '{17}'
ORDER BY
    seqno;

SELECT
    *
FROM
    array_index_op_test
WHERE
    i @> '{32,17}'
ORDER BY
    seqno;

SELECT
    *
FROM
    array_index_op_test
WHERE
    i && '{32,17}'
ORDER BY
    seqno;

SELECT
    *
FROM
    array_index_op_test
WHERE
    i <@ '{38,34,32,89}'
ORDER BY
    seqno;

SELECT
    *
FROM
    array_index_op_test
WHERE
    i = '{47,77}'
ORDER BY
    seqno;

SELECT
    *
FROM
    array_index_op_test
WHERE
    i = '{}'
ORDER BY
    seqno;

SELECT
    *
FROM
    array_index_op_test
WHERE
    i @> '{}'
ORDER BY
    seqno;

SELECT
    *
FROM
    array_index_op_test
WHERE
    i && '{}'
ORDER BY
    seqno;

SELECT
    *
FROM
    array_index_op_test
WHERE
    i <@ '{}'
ORDER BY
    seqno;

SELECT
    *
FROM
    array_op_test
WHERE
    i = '{NULL}'
ORDER BY
    seqno;

SELECT
    *
FROM
    array_op_test
WHERE
    i @> '{NULL}'
ORDER BY
    seqno;

SELECT
    *
FROM
    array_op_test
WHERE
    i && '{NULL}'
ORDER BY
    seqno;

SELECT
    *
FROM
    array_op_test
WHERE
    i <@ '{NULL}'
ORDER BY
    seqno;

CREATE INDEX textarrayidx ON array_index_op_test USING gin (t);

EXPLAIN (
    COSTS OFF
)
SELECT
    *
FROM
    array_index_op_test
WHERE
    t @> '{AAAAAAAA72908}'
ORDER BY
    seqno;

SELECT
    *
FROM
    array_index_op_test
WHERE
    t @> '{AAAAAAAA72908}'
ORDER BY
    seqno;

SELECT
    *
FROM
    array_index_op_test
WHERE
    t && '{AAAAAAAA72908}'
ORDER BY
    seqno;

SELECT
    *
FROM
    array_index_op_test
WHERE
    t @> '{AAAAAAAAAA646}'
ORDER BY
    seqno;

SELECT
    *
FROM
    array_index_op_test
WHERE
    t && '{AAAAAAAAAA646}'
ORDER BY
    seqno;

SELECT
    *
FROM
    array_index_op_test
WHERE
    t @> '{AAAAAAAA72908,AAAAAAAAAA646}'
ORDER BY
    seqno;

SELECT
    *
FROM
    array_index_op_test
WHERE
    t && '{AAAAAAAA72908,AAAAAAAAAA646}'
ORDER BY
    seqno;

SELECT
    *
FROM
    array_index_op_test
WHERE
    t <@ '{AAAAAAAA72908,AAAAAAAAAAAAAAAAAAA17075,AA88409,AAAAAAAAAAAAAAAAAA36842,AAAAAAA48038,AAAAAAAAAAAAAA10611}'
ORDER BY
    seqno;

SELECT
    *
FROM
    array_index_op_test
WHERE
    t = '{AAAAAAAAAA646,A87088}'
ORDER BY
    seqno;

SELECT
    *
FROM
    array_index_op_test
WHERE
    t = '{}'
ORDER BY
    seqno;

SELECT
    *
FROM
    array_index_op_test
WHERE
    t @> '{}'
ORDER BY
    seqno;

SELECT
    *
FROM
    array_index_op_test
WHERE
    t && '{}'
ORDER BY
    seqno;

SELECT
    *
FROM
    array_index_op_test
WHERE
    t <@ '{}'
ORDER BY
    seqno;

-- And try it with a multicolumn GIN index
DROP INDEX intarrayidx, textarrayidx;

CREATE INDEX botharrayidx ON array_index_op_test USING gin (i, t);

SELECT
    *
FROM
    array_index_op_test
WHERE
    i @> '{32}'
ORDER BY
    seqno;

SELECT
    *
FROM
    array_index_op_test
WHERE
    i && '{32}'
ORDER BY
    seqno;

SELECT
    *
FROM
    array_index_op_test
WHERE
    t @> '{AAAAAAA80240}'
ORDER BY
    seqno;

SELECT
    *
FROM
    array_index_op_test
WHERE
    t && '{AAAAAAA80240}'
ORDER BY
    seqno;

SELECT
    *
FROM
    array_index_op_test
WHERE
    i @> '{32}'
    AND t && '{AAAAAAA80240}'
ORDER BY
    seqno;

SELECT
    *
FROM
    array_index_op_test
WHERE
    i && '{32}'
    AND t @> '{AAAAAAA80240}'
ORDER BY
    seqno;

SELECT
    *
FROM
    array_index_op_test
WHERE
    t = '{}'
ORDER BY
    seqno;

SELECT
    *
FROM
    array_op_test
WHERE
    i = '{NULL}'
ORDER BY
    seqno;

SELECT
    *
FROM
    array_op_test
WHERE
    i <@ '{NULL}'
ORDER BY
    seqno;

RESET enable_seqscan;

RESET enable_indexscan;

RESET enable_bitmapscan;

--
-- Try a GIN index with a lot of items with same key. (GIN creates a posting
-- tree when there are enough duplicates)
--
CREATE TABLE array_gin_test (
    a int[]
);

INSERT INTO array_gin_test
SELECT
    ARRAY[1, g % 5, g]
FROM
    generate_series(1, 10000) g;

CREATE INDEX array_gin_test_idx ON array_gin_test USING gin (a);

SELECT
    COUNT(*)
FROM
    array_gin_test
WHERE
    a @> '{2}';

DROP TABLE array_gin_test;

--
-- Test GIN index's reloptions
--
CREATE INDEX gin_relopts_test ON array_index_op_test USING gin (i) WITH (FASTUPDATE = ON, GIN_PENDING_LIST_LIMIT = 128);

\d+ gin_relopts_test
--
-- HASH
--
CREATE INDEX hash_i4_index ON hash_i4_heap USING HASH (random int4_ops);

CREATE INDEX hash_name_index ON hash_name_heap USING HASH (random name_ops);

CREATE INDEX hash_txt_index ON hash_txt_heap USING HASH (random text_ops);

CREATE INDEX hash_f8_index ON hash_f8_heap USING HASH (random float8_ops) WITH (fillfactor = 60);

CREATE UNLOGGED TABLE unlogged_hash_table (
    id int4
);

CREATE INDEX unlogged_hash_index ON unlogged_hash_table USING HASH (id int4_ops);

DROP TABLE unlogged_hash_table;

-- CREATE INDEX hash_ovfl_index ON hash_ovfl_heap USING hash (x int4_ops);
-- Test hash index build tuplesorting.  Force hash tuplesort using low
-- maintenance_work_mem setting and fillfactor:
SET maintenance_work_mem = '1MB';

CREATE INDEX hash_tuplesort_idx ON tenk1 USING HASH (stringu1 name_ops) WITH (fillfactor = 10);

EXPLAIN (
    COSTS OFF
)
SELECT
    count(*)
FROM
    tenk1
WHERE
    stringu1 = 'TVAAAA';

SELECT
    count(*)
FROM
    tenk1
WHERE
    stringu1 = 'TVAAAA';

DROP INDEX hash_tuplesort_idx;

RESET maintenance_work_mem;

--
-- Test functional index
--
CREATE TABLE func_index_heap (
    f1 text,
    f2 text
);

CREATE UNIQUE INDEX func_index_index ON func_index_heap (textcat(f1, f2));

INSERT INTO func_index_heap
    VALUES ('ABC', 'DEF');

INSERT INTO func_index_heap
    VALUES ('AB', 'CDEFG');

INSERT INTO func_index_heap
    VALUES ('QWE', 'RTY');

-- this should fail because of unique index:
INSERT INTO func_index_heap
    VALUES ('ABCD', 'EF');

-- but this shouldn't:
INSERT INTO func_index_heap
    VALUES ('QWERTY');

--
-- Same test, expressional index
--
DROP TABLE func_index_heap;

CREATE TABLE func_index_heap (
    f1 text,
    f2 text
);

CREATE UNIQUE INDEX func_index_index ON func_index_heap ((f1 || f2) text_ops);

INSERT INTO func_index_heap
    VALUES ('ABC', 'DEF');

INSERT INTO func_index_heap
    VALUES ('AB', 'CDEFG');

INSERT INTO func_index_heap
    VALUES ('QWE', 'RTY');

-- this should fail because of unique index:
INSERT INTO func_index_heap
    VALUES ('ABCD', 'EF');

-- but this shouldn't:
INSERT INTO func_index_heap
    VALUES ('QWERTY');

--
-- Test unique index with included columns
--
CREATE TABLE covering_index_heap (
    f1 int,
    f2 int,
    f3 text
);

CREATE UNIQUE INDEX covering_index_index ON covering_index_heap (f1, f2) INCLUDE (f3);

INSERT INTO covering_index_heap
    VALUES (1, 1, 'AAA');

INSERT INTO covering_index_heap
    VALUES (1, 2, 'AAA');

-- this should fail because of unique index on f1,f2:
INSERT INTO covering_index_heap
    VALUES (1, 2, 'BBB');

-- and this shouldn't:
INSERT INTO covering_index_heap
    VALUES (1, 4, 'AAA');

-- Try to build index on table that already contains data
CREATE UNIQUE INDEX covering_pkey ON covering_index_heap (f1, f2) INCLUDE (f3);

-- Try to use existing covering index as primary key
ALTER TABLE covering_index_heap
    ADD CONSTRAINT covering_pkey PRIMARY KEY USING INDEX covering_pkey;

DROP TABLE covering_index_heap;

--
-- Also try building functional, expressional, and partial indexes on
-- tables that already contain data.
--
CREATE UNIQUE INDEX hash_f8_index_1 ON hash_f8_heap (abs(random));

CREATE UNIQUE INDEX hash_f8_index_2 ON hash_f8_heap ((seqno + 1), random);

CREATE UNIQUE INDEX hash_f8_index_3 ON hash_f8_heap (random)
WHERE
    seqno > 1000;

--
-- Try some concurrent index builds
--
-- Unfortunately this only tests about half the code paths because there are
-- no concurrent updates happening to the table at the same time.
CREATE TABLE concur_heap (
    f1 text,
    f2 text
);

-- empty table
CREATE INDEX CONCURRENTLY concur_index1 ON concur_heap (f2, f1);

CREATE INDEX CONCURRENTLY IF NOT EXISTS concur_index1 ON concur_heap (f2, f1);

INSERT INTO concur_heap
    VALUES ('a', 'b');

INSERT INTO concur_heap
    VALUES ('b', 'b');

-- unique index
CREATE UNIQUE INDEX CONCURRENTLY concur_index2 ON concur_heap (f1);

CREATE UNIQUE INDEX CONCURRENTLY IF NOT EXISTS concur_index2 ON concur_heap (f1);

-- check if constraint is set up properly to be enforced
INSERT INTO concur_heap
    VALUES ('b', 'x');

-- check if constraint is enforced properly at build time
CREATE UNIQUE INDEX CONCURRENTLY concur_index3 ON concur_heap (f2);

-- test that expression indexes and partial indexes work concurrently
CREATE INDEX CONCURRENTLY concur_index4 ON concur_heap (f2)
WHERE
    f1 = 'a';

CREATE INDEX CONCURRENTLY concur_index5 ON concur_heap (f2)
WHERE
    f1 = 'x';

-- here we also check that you can default the index name
CREATE INDEX CONCURRENTLY ON concur_heap ((f2 || f1));

-- You can't do a concurrent index build in a transaction
BEGIN;
CREATE INDEX CONCURRENTLY concur_index7 ON concur_heap (f1);
COMMIT;

-- But you can do a regular index build in a transaction
BEGIN;
CREATE INDEX std_index ON concur_heap (f2);
COMMIT;

-- Failed builds are left invalid by VACUUM FULL, fixed by REINDEX
VACUUM
    FULL concur_heap;

REINDEX TABLE concur_heap;

DELETE FROM concur_heap
WHERE f1 = 'b';

VACUUM
    FULL concur_heap;

\d concur_heap
REINDEX TABLE concur_heap;

\d concur_heap
--
-- Try some concurrent index drops
--
DROP INDEX CONCURRENTLY "concur_index2";

-- works
DROP INDEX CONCURRENTLY IF EXISTS "concur_index2";

-- notice
-- failures
DROP INDEX CONCURRENTLY "concur_index2", "concur_index3";

BEGIN;
DROP INDEX CONCURRENTLY "concur_index5";
ROLLBACK;

-- successes
DROP INDEX CONCURRENTLY IF EXISTS "concur_index3";

DROP INDEX CONCURRENTLY "concur_index4";

DROP INDEX CONCURRENTLY "concur_index5";

DROP INDEX CONCURRENTLY "concur_index1";

DROP INDEX CONCURRENTLY "concur_heap_expr_idx";

\d concur_heap
DROP TABLE concur_heap;

--
-- Test ADD CONSTRAINT USING INDEX
--
CREATE TABLE cwi_test (
    a int,
    b varchar(10),
    c char
);

-- add some data so that all tests have something to work with.
INSERT INTO cwi_test
VALUES
    (1, 2),
    (3, 4),
    (5, 6);

CREATE UNIQUE INDEX cwi_uniq_idx ON cwi_test (a, b);

ALTER TABLE cwi_test
    ADD PRIMARY KEY USING INDEX cwi_uniq_idx;

\d cwi_test
\d cwi_uniq_idx
CREATE UNIQUE INDEX cwi_uniq2_idx ON cwi_test (b, a);

ALTER TABLE cwi_test
    DROP CONSTRAINT cwi_uniq_idx,
    ADD CONSTRAINT cwi_replaced_pkey PRIMARY KEY USING INDEX cwi_uniq2_idx;

\d cwi_test
\d cwi_replaced_pkey
DROP INDEX cwi_replaced_pkey;

-- Should fail; a constraint depends on it
DROP TABLE cwi_test;

-- ADD CONSTRAINT USING INDEX is forbidden on partitioned tables
CREATE TABLE cwi_test (
    a int
)
PARTITION BY HASH (a);

CREATE UNIQUE INDEX ON cwi_test (a);

ALTER TABLE cwi_test
    ADD PRIMARY KEY USING INDEX cwi_test_a_idx;

DROP TABLE cwi_test;

--
-- Check handling of indexes on system columns
--
CREATE TABLE syscol_table (
    a int
);

-- System columns cannot be indexed
CREATE INDEX ON syscolcol_table (ctid);

-- nor used in expressions
CREATE INDEX ON syscol_table ((ctid >= '(1000,0)'));

-- nor used in predicates
CREATE INDEX ON syscol_table (a)
WHERE
    ctid >= '(1000,0)';

DROP TABLE syscol_table;

--
-- Tests for IS NULL/IS NOT NULL with b-tree indexes
--
SELECT
    unique1,
    unique2 INTO onek_with_null
FROM
    onek;

INSERT INTO onek_with_null (unique1, unique2)
VALUES
    (NULL, -1),
    (NULL, NULL);

CREATE UNIQUE INDEX onek_nulltest ON onek_with_null (unique2, unique1);

SET enable_seqscan = OFF;

SET enable_indexscan = ON;

SET enable_bitmapscan = ON;

SELECT
    count(*)
FROM
    onek_with_null
WHERE
    unique1 IS NULL;

SELECT
    count(*)
FROM
    onek_with_null
WHERE
    unique1 IS NULL
    AND unique2 IS NULL;

SELECT
    count(*)
FROM
    onek_with_null
WHERE
    unique1 IS NOT NULL;

SELECT
    count(*)
FROM
    onek_with_null
WHERE
    unique1 IS NULL
    AND unique2 IS NOT NULL;

SELECT
    count(*)
FROM
    onek_with_null
WHERE
    unique1 IS NOT NULL
    AND unique1 > 500;

SELECT
    count(*)
FROM
    onek_with_null
WHERE
    unique1 IS NULL
    AND unique1 > 500;

DROP INDEX onek_nulltest;

CREATE UNIQUE INDEX onek_nulltest ON onek_with_null (unique2 DESC, unique1);

SELECT
    count(*)
FROM
    onek_with_null
WHERE
    unique1 IS NULL;

SELECT
    count(*)
FROM
    onek_with_null
WHERE
    unique1 IS NULL
    AND unique2 IS NULL;

SELECT
    count(*)
FROM
    onek_with_null
WHERE
    unique1 IS NOT NULL;

SELECT
    count(*)
FROM
    onek_with_null
WHERE
    unique1 IS NULL
    AND unique2 IS NOT NULL;

SELECT
    count(*)
FROM
    onek_with_null
WHERE
    unique1 IS NOT NULL
    AND unique1 > 500;

SELECT
    count(*)
FROM
    onek_with_null
WHERE
    unique1 IS NULL
    AND unique1 > 500;

DROP INDEX onek_nulltest;

CREATE UNIQUE INDEX onek_nulltest ON onek_with_null (unique2 DESC nulls LAST, unique1);

SELECT
    count(*)
FROM
    onek_with_null
WHERE
    unique1 IS NULL;

SELECT
    count(*)
FROM
    onek_with_null
WHERE
    unique1 IS NULL
    AND unique2 IS NULL;

SELECT
    count(*)
FROM
    onek_with_null
WHERE
    unique1 IS NOT NULL;

SELECT
    count(*)
FROM
    onek_with_null
WHERE
    unique1 IS NULL
    AND unique2 IS NOT NULL;

SELECT
    count(*)
FROM
    onek_with_null
WHERE
    unique1 IS NOT NULL
    AND unique1 > 500;

SELECT
    count(*)
FROM
    onek_with_null
WHERE
    unique1 IS NULL
    AND unique1 > 500;

DROP INDEX onek_nulltest;

CREATE UNIQUE INDEX onek_nulltest ON onek_with_null (unique2 nulls FIRST, unique1);

SELECT
    count(*)
FROM
    onek_with_null
WHERE
    unique1 IS NULL;

SELECT
    count(*)
FROM
    onek_with_null
WHERE
    unique1 IS NULL
    AND unique2 IS NULL;

SELECT
    count(*)
FROM
    onek_with_null
WHERE
    unique1 IS NOT NULL;

SELECT
    count(*)
FROM
    onek_with_null
WHERE
    unique1 IS NULL
    AND unique2 IS NOT NULL;

SELECT
    count(*)
FROM
    onek_with_null
WHERE
    unique1 IS NOT NULL
    AND unique1 > 500;

SELECT
    count(*)
FROM
    onek_with_null
WHERE
    unique1 IS NULL
    AND unique1 > 500;

DROP INDEX onek_nulltest;

-- Check initial-positioning logic too
CREATE UNIQUE INDEX onek_nulltest ON onek_with_null (unique2);

SET enable_seqscan = OFF;

SET enable_indexscan = ON;

SET enable_bitmapscan = OFF;

SELECT
    unique1,
    unique2
FROM
    onek_with_null
ORDER BY
    unique2
LIMIT 2;

SELECT
    unique1,
    unique2
FROM
    onek_with_null
WHERE
    unique2 >= -1
ORDER BY
    unique2
LIMIT 2;

SELECT
    unique1,
    unique2
FROM
    onek_with_null
WHERE
    unique2 >= 0
ORDER BY
    unique2
LIMIT 2;

SELECT
    unique1,
    unique2
FROM
    onek_with_null
ORDER BY
    unique2 DESC
LIMIT 2;

SELECT
    unique1,
    unique2
FROM
    onek_with_null
WHERE
    unique2 >= -1
ORDER BY
    unique2 DESC
LIMIT 2;

SELECT
    unique1,
    unique2
FROM
    onek_with_null
WHERE
    unique2 < 999
ORDER BY
    unique2 DESC
LIMIT 2;

RESET enable_seqscan;

RESET enable_indexscan;

RESET enable_bitmapscan;

DROP TABLE onek_with_null;

--
-- Check bitmap index path planning
--
EXPLAIN (
    COSTS OFF
)
SELECT
    *
FROM
    tenk1
WHERE
    thousand = 42
    AND (tenthous = 1
        OR tenthous = 3
        OR tenthous = 42);

SELECT
    *
FROM
    tenk1
WHERE
    thousand = 42
    AND (tenthous = 1
        OR tenthous = 3
        OR tenthous = 42);

EXPLAIN (
    COSTS OFF
)
SELECT
    count(*)
FROM
    tenk1
WHERE
    hundred = 42
    AND (thousand = 42
        OR thousand = 99);

SELECT
    count(*)
FROM
    tenk1
WHERE
    hundred = 42
    AND (thousand = 42
        OR thousand = 99);

--
-- Check behavior with duplicate index column contents
--
CREATE TABLE dupindexcols AS
SELECT
    unique1 AS id,
    stringu2::text AS f1
FROM
    tenk1;

CREATE INDEX dupindexcols_i ON dupindexcols (f1, id, f1 text_pattern_ops);

ANALYZE dupindexcols;

EXPLAIN (
    COSTS OFF
)
SELECT
    count(*)
FROM
    dupindexcols
WHERE
    f1 BETWEEN 'WA' AND 'ZZZ'
    AND id < 1000
    AND f1 ~<~ 'YX';

SELECT
    count(*)
FROM
    dupindexcols
WHERE
    f1 BETWEEN 'WA' AND 'ZZZ'
    AND id < 1000
    AND f1 ~<~ 'YX';

--
-- Check ordering of =ANY indexqual results (bug in 9.2.0)
--
VACUUM tenk1;

-- ensure we get consistent plans here
EXPLAIN (
    COSTS OFF
)
SELECT
    unique1
FROM
    tenk1
WHERE
    unique1 IN (1, 42, 7)
ORDER BY
    unique1;

SELECT
    unique1
FROM
    tenk1
WHERE
    unique1 IN (1, 42, 7)
ORDER BY
    unique1;

EXPLAIN (
    COSTS OFF
)
SELECT
    thousand,
    tenthous
FROM
    tenk1
WHERE
    thousand < 2
    AND tenthous IN (1001, 3000)
ORDER BY
    thousand;

SELECT
    thousand,
    tenthous
FROM
    tenk1
WHERE
    thousand < 2
    AND tenthous IN (1001, 3000)
ORDER BY
    thousand;

SET enable_indexonlyscan = OFF;

EXPLAIN (
    COSTS OFF
)
SELECT
    thousand,
    tenthous
FROM
    tenk1
WHERE
    thousand < 2
    AND tenthous IN (1001, 3000)
ORDER BY
    thousand;

SELECT
    thousand,
    tenthous
FROM
    tenk1
WHERE
    thousand < 2
    AND tenthous IN (1001, 3000)
ORDER BY
    thousand;

RESET enable_indexonlyscan;

--
-- Check elimination of constant-NULL subexpressions
--
EXPLAIN (
    COSTS OFF
)
SELECT
    *
FROM
    tenk1
WHERE (thousand, tenthous) IN ((1, 1001), (NULL, NULL));

--
-- Check matching of boolean index columns to WHERE conditions and sort keys
--
CREATE temp TABLE boolindex (
    b bool,
    i int,
    UNIQUE (b, i),
    junk float
);

EXPLAIN (
    COSTS OFF
)
SELECT
    *
FROM
    boolindex
ORDER BY
    b,
    i
LIMIT 10;

EXPLAIN (
    COSTS OFF
)
SELECT
    *
FROM
    boolindex
WHERE
    b
ORDER BY
    i
LIMIT 10;

EXPLAIN (
    COSTS OFF
)
SELECT
    *
FROM
    boolindex
WHERE
    b = TRUE
ORDER BY
    i DESC
LIMIT 10;

EXPLAIN (
    COSTS OFF
)
SELECT
    *
FROM
    boolindex
WHERE
    NOT b
ORDER BY
    i
LIMIT 10;

EXPLAIN (
    COSTS OFF
)
SELECT
    *
FROM
    boolindex
WHERE
    b IS TRUE
ORDER BY
    i DESC
LIMIT 10;

EXPLAIN (
    COSTS OFF
)
SELECT
    *
FROM
    boolindex
WHERE
    b IS FALSE
ORDER BY
    i DESC
LIMIT 10;

--
-- REINDEX (VERBOSE)
--
CREATE TABLE reindex_verbose (
    id integer PRIMARY KEY
);

\set VERBOSITY terse \\ -- suppress machine-dependent details
REINDEX (VERBOSE)
TABLE reindex_verbose;

\set VERBOSITY default
DROP TABLE reindex_verbose;

--
-- REINDEX CONCURRENTLY
--
CREATE TABLE concur_reindex_tab (
    c1 int
);

-- REINDEX
REINDEX TABLE concur_reindex_tab;

-- notice
REINDEX TABLE CONCURRENTLY concur_reindex_tab;

-- notice
ALTER TABLE concur_reindex_tab
    ADD COLUMN c2 text;

-- add toast index
-- Normal index with integer column
CREATE UNIQUE INDEX concur_reindex_ind1 ON concur_reindex_tab (c1);

-- Normal index with text column
CREATE INDEX concur_reindex_ind2 ON concur_reindex_tab (c2);

-- UNIQUE index with expression
CREATE UNIQUE INDEX concur_reindex_ind3 ON concur_reindex_tab (abs(c1));

-- Duplicate column names
CREATE INDEX concur_reindex_ind4 ON concur_reindex_tab (c1, c1, c2);

-- Create table for check on foreign key dependence switch with indexes swapped
ALTER TABLE concur_reindex_tab
    ADD PRIMARY KEY USING INDEX concur_reindex_ind1;

CREATE TABLE concur_reindex_tab2 (
    c1 int REFERENCES concur_reindex_tab
);

INSERT INTO concur_reindex_tab
    VALUES (1, 'a');

INSERT INTO concur_reindex_tab
    VALUES (2, 'a');

-- Reindex concurrently of exclusion constraint currently not supported
CREATE TABLE concur_reindex_tab3 (
    c1 int,
    c2 int4range,
    EXCLUDE USING gist (c2 WITH &&)
);

INSERT INTO concur_reindex_tab3
    VALUES (3, '[1,2]');

REINDEX INDEX CONCURRENTLY concur_reindex_tab3_c2_excl;

-- error
REINDEX TABLE CONCURRENTLY concur_reindex_tab3;

-- succeeds with warning
INSERT INTO concur_reindex_tab3
    VALUES (4, '[2,4]');

-- Check materialized views
CREATE MATERIALIZED VIEW concur_reindex_matview AS
SELECT
    *
FROM
    concur_reindex_tab;

REINDEX INDEX CONCURRENTLY concur_reindex_ind1;

REINDEX TABLE CONCURRENTLY concur_reindex_tab;

REINDEX TABLE CONCURRENTLY concur_reindex_matview;

-- Check that comments are preserved
CREATE TABLE testcomment (
    i int
);

CREATE INDEX testcomment_idx1 ON testcomment (i);

COMMENT ON INDEX testcomment_idx1 IS 'test comment';

SELECT
    obj_description('testcomment_idx1'::regclass, 'pg_class');

REINDEX TABLE testcomment;

SELECT
    obj_description('testcomment_idx1'::regclass, 'pg_class');

REINDEX TABLE CONCURRENTLY testcomment;

SELECT
    obj_description('testcomment_idx1'::regclass, 'pg_class');

DROP TABLE testcomment;

-- Partitions
-- Create some partitioned tables
CREATE TABLE concur_reindex_part (
    c1 int,
    c2 int
)
PARTITION BY RANGE (c1);

CREATE TABLE concur_reindex_part_0 PARTITION OF concur_reindex_part
FOR VALUES FROM (0) TO (10)
PARTITION BY LIST (c2);

CREATE TABLE concur_reindex_part_0_1 PARTITION OF concur_reindex_part_0
FOR VALUES IN (1);

CREATE TABLE concur_reindex_part_0_2 PARTITION OF concur_reindex_part_0
FOR VALUES IN (2);

-- This partitioned table will have no partitions.
CREATE TABLE concur_reindex_part_10 PARTITION OF concur_reindex_part
FOR VALUES FROM (10) TO (20)
PARTITION BY LIST (c2);

-- Create some partitioned indexes
CREATE INDEX concur_reindex_part_index ON ONLY concur_reindex_part (c1);

CREATE INDEX concur_reindex_part_index_0 ON ONLY concur_reindex_part_0 (c1);

ALTER INDEX concur_reindex_part_index ATTACH PARTITION concur_reindex_part_index_0;

-- This partitioned index will have no partitions.
CREATE INDEX concur_reindex_part_index_10 ON ONLY concur_reindex_part_10 (c1);

ALTER INDEX concur_reindex_part_index ATTACH PARTITION concur_reindex_part_index_10;

CREATE INDEX concur_reindex_part_index_0_1 ON ONLY concur_reindex_part_0_1 (c1);

ALTER INDEX concur_reindex_part_index_0 ATTACH PARTITION concur_reindex_part_index_0_1;

CREATE INDEX concur_reindex_part_index_0_2 ON ONLY concur_reindex_part_0_2 (c1);

ALTER INDEX concur_reindex_part_index_0 ATTACH PARTITION concur_reindex_part_index_0_2;

SELECT
    relid,
    parentrelid,
    level
FROM
    pg_partition_tree ('concur_reindex_part_index')
ORDER BY
    relid,
    level;

-- REINDEX fails for partitioned indexes
REINDEX INDEX concur_reindex_part_index_10;

REINDEX INDEX CONCURRENTLY concur_reindex_part_index_10;

-- REINDEX is a no-op for partitioned tables
REINDEX TABLE concur_reindex_part_10;

REINDEX TABLE CONCURRENTLY concur_reindex_part_10;

SELECT
    relid,
    parentrelid,
    level
FROM
    pg_partition_tree ('concur_reindex_part_index')
ORDER BY
    relid,
    level;

-- REINDEX should preserve dependencies of partition tree.
REINDEX INDEX CONCURRENTLY concur_reindex_part_index_0_1;

REINDEX INDEX CONCURRENTLY concur_reindex_part_index_0_2;

SELECT
    relid,
    parentrelid,
    level
FROM
    pg_partition_tree ('concur_reindex_part_index')
ORDER BY
    relid,
    level;

REINDEX TABLE CONCURRENTLY concur_reindex_part_0_1;

REINDEX TABLE CONCURRENTLY concur_reindex_part_0_2;

SELECT
    relid,
    parentrelid,
    level
FROM
    pg_partition_tree ('concur_reindex_part_index')
ORDER BY
    relid,
    level;

DROP TABLE concur_reindex_part;

-- Check errors
-- Cannot run inside a transaction block
BEGIN;
REINDEX TABLE CONCURRENTLY concur_reindex_tab;
COMMIT;

REINDEX TABLE CONCURRENTLY pg_database;

-- no shared relation
REINDEX TABLE CONCURRENTLY pg_class;

-- no catalog relations
REINDEX SYSTEM CONCURRENTLY postgres;

-- not allowed for SYSTEM
-- Warns about catalog relations
REINDEX SCHEMA CONCURRENTLY pg_catalog;

-- Check the relation status, there should not be invalid indexes
\d concur_reindex_tab
DROP MATERIALIZED VIEW concur_reindex_matview;

DROP TABLE concur_reindex_tab, concur_reindex_tab2, concur_reindex_tab3;

-- Check handling of invalid indexes
CREATE TABLE concur_reindex_tab4 (
    c1 int
);

INSERT INTO concur_reindex_tab4
VALUES
    (1),
    (1),
    (2);

-- This trick creates an invalid index.
CREATE UNIQUE INDEX CONCURRENTLY concur_reindex_ind5 ON concur_reindex_tab4 (c1);

-- Reindexing concurrently this index fails with the same failure.
-- The extra index created is itself invalid, and can be dropped.
REINDEX INDEX CONCURRENTLY concur_reindex_ind5;

\d concur_reindex_tab4
DROP INDEX concur_reindex_ind5_ccnew;

-- This makes the previous failure go away, so the index can become valid.
DELETE FROM concur_reindex_tab4
WHERE c1 = 1;

-- The invalid index is not processed when running REINDEX TABLE.
REINDEX TABLE CONCURRENTLY concur_reindex_tab4;

\d concur_reindex_tab4
-- But it is fixed with REINDEX INDEX.
REINDEX INDEX CONCURRENTLY concur_reindex_ind5;

\d concur_reindex_tab4
DROP TABLE concur_reindex_tab4;

--
-- REINDEX SCHEMA
--
REINDEX SCHEMA schema_to_reindex;

-- failure, schema does not exist
CREATE SCHEMA schema_to_reindex;

SET search_path = 'schema_to_reindex';

CREATE TABLE table1 (
    col1 serial PRIMARY KEY
);

INSERT INTO table1
SELECT
    generate_series(1, 400);

CREATE TABLE table2 (
    col1 serial PRIMARY KEY,
    col2 text NOT NULL
);

INSERT INTO table2
SELECT
    generate_series(1, 400),
    'abc';

CREATE INDEX ON table2 (col2);

CREATE MATERIALIZED VIEW matview AS
SELECT
    col1
FROM
    table2;

CREATE INDEX ON matview (col1);

CREATE VIEW VIEW AS
SELECT
    col2
FROM
    table2;

CREATE TABLE reindex_before AS
SELECT
    oid,
    relname,
    relfilenode,
    relkind,
    reltoastrelid
FROM
    pg_class
WHERE
    relnamespace = (
        SELECT
            oid
        FROM
            pg_namespace
        WHERE
            nspname = 'schema_to_reindex');

INSERT INTO reindex_before
SELECT
    oid,
    'pg_toast_TABLE',
    relfilenode,
    relkind,
    reltoastrelid
FROM
    pg_class
WHERE
    oid IN (
        SELECT
            reltoastrelid
        FROM
            reindex_before
        WHERE
            reltoastrelid > 0);

INSERT INTO reindex_before
SELECT
    oid,
    'pg_toast_TABLE_index',
    relfilenode,
    relkind,
    reltoastrelid
FROM
    pg_class
WHERE
    oid IN (
        SELECT
            indexrelid
        FROM
            pg_index
        WHERE
            indrelid IN (
                SELECT
                    reltoastrelid
                FROM
                    reindex_before
                WHERE
                    reltoastrelid > 0));

REINDEX SCHEMA schema_to_reindex;

CREATE TABLE reindex_after AS
SELECT
    oid,
    relname,
    relfilenode,
    relkind
FROM
    pg_class
WHERE
    relnamespace = (
        SELECT
            oid
        FROM
            pg_namespace
        WHERE
            nspname = 'schema_to_reindex');

SELECT
    b.relname,
    b.relkind,
    CASE WHEN a.relfilenode = b.relfilenode THEN
        'relfilenode is unchanged'
    ELSE
        'relfilenode has changed'
    END
FROM
    reindex_before b
    JOIN pg_class a ON b.oid = a.oid
ORDER BY
    1;

REINDEX SCHEMA schema_to_reindex;

BEGIN;
REINDEX SCHEMA schema_to_reindex;
-- failure, cannot run in a transaction
END;
-- concurrently
REINDEX SCHEMA CONCURRENTLY schema_to_reindex;
-- Failure for unauthorized user
CREATE ROLE regress_reindexuser NOLOGIN;
SET SESSION ROLE regress_reindexuser;
REINDEX SCHEMA schema_to_reindex;
-- Clean up
RESET ROLE;
DROP ROLE regress_reindexuser;
DROP SCHEMA schema_to_reindex CASCADE;
